Theoretical calculation of inrush currents in three- and five-legged core transformers

被引：8
|
作者：
Sainz, Luis [1 ]
Corcoles, Felipe
Pedra, Joaquin
Guasch, Luis
机构：
[1] Univ Politecn Catalunya, Dept Elect Engn, E-08028 Barcelona, Spain
[2] Univ Rovira & Virgili, Dept Elect Elect & Automat Engn, Tarragona 43007, Spain
来源：
IEEE TRANSACTIONS ON POWER DELIVERY | 2007年 / 22卷 / 02期
关键词：
inrush current; transformer model; voltage sag;
D O I：
10.1109/TPWRD.2006.881428
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, a theoretical study of the three-phase transformer behavior in the presence of a sag is presented by considering that the fault clearing is produced simultaneously in all phases. Analytical expressions of the magnetic flux and the inrush current after voltage recovery are obtained, and the results presented in the literature are analytically justified. The influence of depth, duration, and the initial point-on-wave on the peak value of the inrush current are studied for all sag types. Simple expressions to obtain the value of the current peaks are presented.
引用
收藏
页码：986 / 995
页数：10
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